Sand-treating machine



Nov. 1, 1927. 1,647,243

v. E. MINICH ET AL- SAND TREATING MACHINE Original Filed-JulylO. 1922 -5 Sheets-Sheet l Nov. 1, 1927;. 1,647,243

v. E. MlNl'CH ET AL.

SAND TREATING MACHINE Original Filed July 10. 1922 5 Sheets-Sheet Nov. 1, 1927. 1,647,243

V. E. MINICH ET AL.-

SAND TREATING MACHINE i inal Filed July 10. 1922 5 sheets-sheet 4 1,647,243 V E MINICH ET AL I SAND TREATING MACHINE Ongmal Flled July 10. 1922 5 Sheets-Sheet 5 Nov.'1, 1927.

Patented Nov. 1', 1927.

UNITED STATES 1,647,243 PATENT OFFICE.

VEBNE n. MINICH; or new YORK, a. Y.. Ai-innAYMoNn n. oonnor Cnr'oAGo, iLLi- NoIs, ASSIGNORS TO THE AMERICAN rounnn-Y'neuirlvinn'r GOMPANY,- or NEW I YORK, N. Y., A CoaroRArro'n OF OHIO.

SAND-TREATING MACHINE.

Application filed July 10, 1922, Serial No. 573,765. Renewed March 29, 1923.

Our invention relates to sand treating machines particularly for treating used sand in foundries to prepare it for another use;

One of the objects of the invention is to provide a simple and practical machine for cutting and piling sand.

Another object of the invention is to provide a machine which will not'only cut and pile sand but will also permit an advantageous distribution or placing of same.

In the accompanying drawings- Fig. 1 is a side elevation of a machine embodying our present invention; I

Fig. 2 is a plan view of the same;

' Fig. 3 is a front elevation;

Fig. 4 is a transverse section of the front part of the machine;

Figs. 5 and 6 are cross-sections taken on the line 5 "5 and 66,- respectively, of Fig. 4; and

7 is a cross-section taken online 7'7 in Fig. 3.

Fig. 8 is a detail of construction. Referring to the drawings,'we show a machine having a body frame 1 with small and large ground or travel wheels 2, 2 and 3. 3, respectively. The wheels 2 are pivotally arranged so as to permit steering. An electric motor 4 is provided for driving the machini along the ground. the same being connected to a drive-shaft 5 having a worm 6, this meshing into the gears 7. which in turn mesh with sprockets 8 on the drive wheels 3;

The machine is provided with devices- 10, 10 for acting upon the used sand as it lies on the surface on which the machine travels.

These members 10 are for gathering or col lecting the sand and delivering it to treating mechanism, as will be later explained. Said members 10 are. preferably cone shaped, extending crosswise of the, machine, and are provided with blades 11, 11 adapted to come in contact with the sand and act upon it in somewhat the same manner of a screw thread, each -memb'er 10 lifting the sand slightly and moving it inwardly; The members 10 are also provided with boXlike structures 12 directlng and guiding'the lifted sand downwardly and off from the inner ends of members 10., A sand treating mechanism, preferably in the form of a travel-f ing belt 13 is associated with members 10. 10, preferably between the inner ends of same. This belt 13 is in more or less vertical position and provided with tongs or projections 14 to engage sand and carry it along in the direction the belt moves. The belt 13 is'so located with reference to the member 10 10 that sand delivered through boxes or guides 12, 12 falls on belt 13 and will be carried by the belt and then discharged from same in a continuous stream or spray. The belt 13. by its tongs or projections 14, 14 acts upon or treats the sand, cutting and sifting same as well as delivering or distributing it. The members 10, 1O always rotate in the same way, so as always to deliver sand continuously totraveling treating belt 13. I

The machine maybe used for the different foundry operations usually known as cutting and piling sand. It is moved in the same direction for either operation. that is,

from left to right. as indicated by arrow,

If it is desired to use the machine for cut-1 ting, the member 13 will be in the position shown in full lines in Fig. 7 in which case the sand is discharged rearwardly If. on the other hand, it is desired to pile, said belt 13 is in a reversed position, as shown: in dotted lines in Fig. 7, and in this position the sand is projected in a continuous stream forward. Thus, the machine may be used in either manner as desired and 'the stream of sand may be directed either forwardly or backwardly and to desired locations. Stripping fingers 13- 13 are arranged on both sides of the upper end of treating member 13, so as to wipe off or strip excess sand above projections 14, as only sand between said projections is to be delivered from the machine.

In order to drive the rotary members 10,- d-riving connections are attached preferably to their outer ends. conveniently consisting of drive rods 17 .17 gear connected with r0- tary shafts 18 of said members 10, 10; shown in Fig. 6.

Connection is also made between the driv-- mounted by roller 26. Shaft 25 is connected so as to be driven in either direction to thereby drive the belt 13 in either direction. To such end gears 2", 28, 29 and 30 are interposed between shafts l8 and 25, so as to drive the belt in one direction. On the other hand, gears l, 32, 38, 34 and 35 are interposed between shaft 18 and shaft 25 to drive the latter and belt 13 in the opposite direction. Either the one or the other of the two aforesaid sets of gears are thrown into a'mesh by the swinging movement of the belt 13 from one side to the other, as shown in Fig. 7. The swinging movement may be accomplished by hand or otherwise. The rotary members 10, 10 are preferably mounted on a swinging frame 3'7, so that they may be bodily raised and lowered to be applied to or freed from the work. This swinging frame 87 carries a driving motor 38 connected by sprocket chain 39 with rotary shaft 40 which is in turn gear connected with previously mentioned. driving-shaft 17. Thus, not only the gathering members 10, 10 but also the power means and driving connections will be adjusted.

Swinging movement of member 13 and its frame is limited in one direction by co-operating plates 4-0" and i1. and in the other direction by plates 42 and 43.

The part 46 is a baflie member or plate which prevents the sand material from beingthrown into the operating parts of the machine.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What we claim is:

1. A machine of the class specified, comprising an imperforate sand conveying and treating mechanism for acting on molding sand to convey it and prepare it for use,

and a horizontally disposed sand agitating and gathering member for agitating and collooting sand and feeding it directly to and upon said mechanism.

2. A machine of the class specified, comprising an imperforate sand conveying and treating member adapted to act upon molding sand to prepare it for molding purposes, and a pair of gathering members located on opposite sides of said treating member and adapted and arranged'to agitate the sand and to feed it directly to and upon said. conveying and treating member.

A machine of the class specified, comprising' a sand conveying and treating memprising a sand conveying and treating member adapted to convey sand and act upon it to prepare it for use in molding and an agitating and gathering member adaptedto agitate and gather the sand and feed 'it to and upon said conveying and treating member, the latter being adjustably mounted to permit sand received from said gathering memher to be discharged or distributed in different places.

5. A machine of the class specified, comprising a sand conveying and treating member adapted to convey sand and act upon it to prepare it for use in molding, an agitating and gathering member adapted to agitate and gather the sand and feed it to and upon said conveying and treating member, the latter being adjustably mounted 'to permit sand'received from said gathering member to be discharged or distributed in different places, and means for driving said agitating and gathering member continuously'in one direction and for driving said conveying and treating member in opposite directions.

6. A device of the class specified, comprising rotary members for gathering sand, a traveling conveyer arranged to receive sand from said rotary members and treat same, means for driving the rotary members, and means for driving the'traveling conveyer in opposite directions, said means comprising two sets of gears, one between one rotary member and the traveling conveyer, and the other between the other rotary member and said conveyer, one set to drive in one direction and the other set to drive in the other direction.

7. A device of the class specified, having sand gathering members, and a sand distributing device arranged to receive sand from said members, said distributingsd-evice being adjustable to permit different distributions of the same, said distributing device comprising a traveling conveyer located between said members and mounted for adjustment in a swinging manner about one end.

8. A device of the class specified, comprising a pair of conically-shaped rotary members, provided with sand striking blades arranged to feed the sand inwardly, a travelingconveyer mounted between said members and positioned to receive sand from the same and provided with projections, driving connections at the outer ends of said rotary members for driving the same, gearing connections between the inner ends of said mem-' 

